Shorty C

I got a 99 si with bolt ons. i/h/cat/e

its gotten ridiculously loud especially with the high flow cat on there and i was wondering if i could put the stock muffler on there to quiet it up a bit.

I was wondering if there are any cons of doing so by putting a stock axleback on a set up with intake, header, hi flo cat, greddy evo b-pipe. Would it create too much back pressure and lose power or break gaskets and leak air or something?

ironcheftony

should quiet it down alot, just put it back on, itll sound great and ull still have the power just a lil bit slower

Shorty C

so there arent really any issues with back pressure?